- The son of Niẓām al-Mulk, Abū Naṣr Aḥmad ibn al-Ḥasan al-Ṭūsī
The consummate vizier, Abū Naṣr ⦗1⦘ Aḥmad, son of the chief of viziers Niẓām al-Mulk al-Ḥasan ibn ʿAlī al-Ṭūsī, resided in Baghdad.
He served as vizier to both the caliph and the sultan ⦗2⦘; his last appointment was under al-Mustarshid bi-Allāh. After a year and a month he was dismissed and remained confined to his house.
He was a man of high standing and dignity, commanding respect at first sight.
He transmitted ḥadīth from ʿAbd al-Raẕẕāq al-Ḥasanābādhī and the latter’s son.
Among those who narrated from him were al-Samʿānī and his own grandson, Dāwūd ibn Sulaymān.
He died in Dhū al-Ḥijjah, 544 AH, and was buried in his residence.
Before him, in Ramaḍān, the Imām’s nephew Abū al-Faḍl Naṣr ibn Aḥmad ibn Niẓām al-Mulk—one of his contemporaries, nearly eighty years old—passed away.
He had studied under Shaykh Abū Isḥāq al-Shīrāzī, and ʿAbd al-Raḥīm ibn al-Samʿānī transmitted from him.
This latter figure died in Ṭūs.